Yes: Iron makes it black. It would not cause it to be soft but something in the vitamin could. A soft stool is not worrisome.
Answered 12/28/2015
1.8k views
7 doctors weighed in across 2 answers
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
A doctor has provided 1 answer
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your question